In this work, a system of coupled meteorology-dispersion model, WRF-HYSPLIT, is used. Sensitivity and validation of the WRF model, is conducted by utilizing different combinations of physical parameterization schemes in study area. Dispersion simulations and annual effective dose for adult age group are carried out using this coupled model under normal conditions for Bushehr power plant. Calculated maximum annual effective dose for adult age group by the coupled model for the years 2014-2016, provided 5.8×10-8 Sv, 6.7×10-8 Sv and 1.1×10-7 Sv respectively. These results are compared by those addressed in ER and FSAR reports. Ratio of calculated dose to legal dose limit for Bushehr power plant under normal operation shows public annual exposure dose for normal operation is negligible compared to the legal limit